Format Support¶

This page lists the file formats that Umamo reads and writes, how it tells them apart, and the differences between platforms.

Support Table¶

Format	Read	Write	Notes
UMA (`.uma`)	Yes, with File ‣ Open…	Yes, with File ‣ Save	Umamo’s native document. See UMA Files.
CMO3 (`.cmo3`)	Yes, with File ‣ Import ‣ CMO3…	Yes, with File ‣ Export ‣ CMO3…	The Cubism Editor project. Tested with Cubism Editor 4.2 to 5.4.
MOC3 (`.moc3`)	Yes, with File ‣ Import ‣ MOC3…	Yes, with File ‣ Export ‣ MOC3…	The baked runtime model, versions 1 to 6. It needs its `.model3.json` file and its textures beside it.
MOC3 sidecar files (`.model3.json`, `.cdi3.json`, `.physics3.json`, `.pose3.json`, `.exp3.json`, `.motion3.json`, `.userdata3.json`)	With the MOC3 that lists them	With the MOC3 that lists them	Never opened on their own. See Cubism Interchange.
PSD (`.psd`)	Yes, as artwork	—	Photoshop.
CLIP (`.clip`)	Yes, as artwork	—	Clip Studio Paint.
KRA (`.kra`)	Yes, as artwork	—	Krita.
PNG (`.png`)	Yes, as artwork	Yes, with File ‣ Export ‣ Image…	Also the format of the texture pages that a MOC3 export writes.
BMP, JPEG, WebP, and TIFF (`.bmp`, `.jpg` and `.jpeg`, `.webp`, `.tif` and `.tiff`)	Yes, as artwork	—	A flat image is read as artwork with one layer.

Artwork is added to the open document with File ‣ Import ‣ Artwork…. See Supported Artwork Formats for how each artwork format is read.

Each file picker operation is filtered to only show the files that it supports:

Command	Files Offered
File ‣ Open…	`.uma`
File ‣ Import ‣ CMO3…	`.cmo3`
File ‣ Import ‣ MOC3…	`.moc3`
File ‣ Import ‣ Artwork…	`.psd`, `.clip`, `.kra`, `.png`, `.bmp`, `.jpg`, `.jpeg`, `.webp`, `.tif`, and `.tiff`

Windows, macOS, and Linux read and write every format in the table.
The .uma file type is registered by the installers. See Installing.
A MOC3 is a group of files, so reading or writing one needs access to the whole folder. Android and iPadOS only gives the application the single file that was picked so MOC3 import and export is not supported on mobile platforms.
Large models and large artwork files use a lot of memory to read and export. See Performance and Memory.

If you need a format or a newer version that is not supported, open an issue. See Reporting Bugs.